Thistle Howl desperately wants to grow, but drinking purple pickle juice doesn't help and her aunt's magic makes Thistle think that maybe she's content just as she is.
There are lots of disadvantages to being the smallest in her family--not being able to ride a bike, play basketball, or go to school--but after a long wait, Maggie grows up.
Ruby, the smallest of five ducklings, is the last of the bunch to learn everything, but while Father Duck worries that she will never catch up, Mother knows she will do just fine in her own time.
Megan is nervous about her dad letting go of her bike as she learns to ride, and her dad is nervous about how far into the world she will go once she does.